现有的大倾角厚煤层开采技术存在着一系列问题，从而导致煤矿回采率低，安全性差，成本高。

There are series problems exist in the existing thick seam mining technology with large dip Angle, thus cause low extraction rate, poor safety and high cost.

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泥浆侵入带的存在除了造成双侧向曲线明显的正幅度差外，还使裂缝倾角和夹角的影响变模糊。

The existence of mud invasion leads to positive difference on dual laterolog, and makes the effect of dip and angle vaguer.

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它可以精确到偏心率和倾角差的一阶项， 而且不再包括长期误差。

The solution is accurate to first order in the eccentricity and inclination difference and including no long term errors.

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